Marine-freshwater prokaryotic transitions require extensive changes in the predicted proteome.

ABSTRACT:

Background

The adaptation of a marine prokaryote to live in freshwater environments or vice versa is generally believed to be an unusual and evolutionary demanding process. However, the reasons are not obvious given the similarity of both kinds of habitats.

Results

We have found major differences at the level of the predicted metaproteomes of marine and freshwater habitats with more acidic values of the isoelectric points (pI) in marine microbes. Furthermore, by comparing genomes of marine-freshwater phylogenetic relatives, we have found higher pI values (basic shift) in the freshwater ones. This difference was sharper in secreted > cytoplasmic > membrane proteins. The changes are concentrated on the surface of soluble proteins. It is also detectable at the level of total am

SUBMITTER: Cabello-Yeves PJ 

PROVIDER: S-EPMC6706942 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature